Microphone casing



April 10, 1934. A. l. BLANC MICROPHONE CASING Filed Dec. 1

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Patented Apr. 10, 1934 1,954,515.

UNITED STATES PATENT OFFICE MICROPHONE CASING Adolph I. Blane, Chicago, Ill. Application December 3, 1931, Serial No. 578,623 1 Claim. (01. 179-419) My invention relates in general to casings and $1011 21 fitting into a corresponding recess 22 in more in particular to a casing for a hand microthe annular flange 16 of the back cup. An aperphone, and means for assembling same. ture is provided in the lip 21 and a correspond- My invention is devised principally to house the ing threaded aperture 23 is provided in the remechanism for asmall microphone, which would cessed portion 22 of the flange 16. A second be carried about in the hand. Suchamicrophone threaded aperture 24 is provided in the lower has been adapted for connecting to a radio set edge of the flange 16. Ahole 26 is bored through for broadcasting through same, or adapted for the base 13 and up through the neck 18. ordinary broadcast using the microphone as a In assembling my casing, the annular flange portable unit. In any event, it will be subjected l6 flts into the recess 17 in the front cup 11, in a to rough handling, is liable to be dropped, and in position such that lip 21 fits into the correspondall must be of a very sturdy construction. In ing recess 22 on the flange 16 of the back cup. the interest of cost of construction and assembly, The cross-sectional view in Fig. 2 shows clearly it is necessary to have as cheap a construction the manner in which the front and back cups fit 15 with as simple an assembly as possible. together. The two portions are held firmly in 7 An object of my invention is to provide a sturdy position by means of a screw 27 inserted into the casing for a small hand microphone. hole 26 and screwed into the threaded aperture A further object is to provide a casing which 24 in the flange 16 of the back cup. Inasmuch will be inexpensive to construct. as the front cup 11 is integral with the base 13,

2 And a further object is to provide a casing the front and back are thereby held firmly toconstructed in a manner that it will be simple to gether at the bottom by means of the screw 27.

assemble. The front and back are similarly held together Other objects and advantages will appear as at the top by a screw 28 inserted through the my description progresses. aperture 29 in the lip 21 and screwed into the 25 Referring now to the drawing, threaded aperture 23 in the recess 22.

Fig. 1 is a perspective of my casing assembled; With my construction, I obtain a very sturdy Fig. 2 is a sectional view along line 2-2 of Fig. microphone casing with a pleasing appearance,

1; and which may be assembled with a minimum number Fig. 3 is a top plan View with the front and back of operations. 30 portions of the casing slightly separated. Although I have described and illustrated the A casing for a small microphone is probably preferred embodiment of my invention, I do not best constructed by casting or stamping same wish to confine myself thereto, except as limited and I have devised my invention with a view toby the claim annexed hereto. ward adapting it to these methods. The casing What I claim is new and desire to secure by 35 10 is constructed in two parts as shown particu- Letters Patent of the United States is: larly in Fig. 3, with a front cup-like portion 11 In a hand microphone, a base, and a casing and back cup-like portion 12. The front cup 11 for housing the mechanism mounted thereon, is formed integral with the base 13 on which it said casing comprising two cup-like sections, one is mounted, while the back cup 12 is separate of said cups including an annular recess, and the 40 from the base before it is assembled. Pegs 14: other of said cups including a corresponding an are cast on the inside of the front of the casing nular flange, an annular abutting rim spaced infor moun the microphene mechanism, p wardly from the outer edge of the flange having cipally a diaphragm, the e a an p ure a recess extending through the rim, and a corre- 15 1) in the p of the assembled Casing is sponding lip extending outwardly from the other 45 pr vided through Which a Gilt-0W6 bill/00H may cup adapted to flt in the recess, and means exprotrude. Holes may be provided in the back tending through the lip and recess to hold the portion or base through which the necessary wires cup-like sections together to form a continuous may extend. An open grille 9 is provided in the casing. face of the front cup. ADOLPI-I I. BLANC.

50 As explained above, the front cup 11 is formed integral with the base 13 at the neck 18. The back cup 12 has an annular flange 16 which flts into a corresponding recess 17 on the front cup of the casing. The front cup in turn has an outer 55 annular flange 19 which has a small lip or exten- 

